Analysis
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max time kernel
146s -
max time network
153s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-06-2024 01:08
Static task
static1
Behavioral task
behavioral1
Sample
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe
Resource
win11-20240508-en
General
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Target
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe
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Size
4.9MB
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MD5
3ac2f5bab22f2fe2e738fd4b2c5714fe
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SHA1
772573778f0e6278013d7bd7b2835ea6f77d6211
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SHA256
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190
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SHA512
9bf53430f2143cf2e0785841bb04e70f39f420623af42112d1f0fe715fa90d6a35fdffd3a6c3dcc07a63014f2133371588658a70a7420f021f22892d21690c12
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SSDEEP
98304:mNlkU2B4RMQ39hkxvmJhZ+SJW3wPt0dAlqOaA1JK5uDMume:fZMtVY33Y2deu91e
Malware Config
Extracted
socks5systemz
cccutzd.net
http://cccutzd.net/search/?q=67e28dd8380ffb281106fa1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c7e8929f3e
http://cccutzd.net/search/?q=67e28dd8380ffb281106fa1d7c27d78406abdd88be4b12eab517aa5c96bd86ec9d854d895a8bbc896c58e713bc90c91936b5281fc235a925ed3e5dd6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c983cca689313
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/1140-87-0x0000000000A80000-0x0000000000B22000-memory.dmp family_socks5systemz behavioral2/memory/1140-112-0x0000000000A80000-0x0000000000B22000-memory.dmp family_socks5systemz behavioral2/memory/1140-113-0x0000000000A80000-0x0000000000B22000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmpwinypux32.exewinypux32.exepid process 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp 1948 winypux32.exe 1140 winypux32.exe -
Loads dropped DLL 1 IoCs
Processes:
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmppid process 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 45.155.250.90 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmppid process 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmpdescription pid process target process PID 4072 wrote to memory of 536 4072 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp PID 4072 wrote to memory of 536 4072 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp PID 4072 wrote to memory of 536 4072 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp PID 536 wrote to memory of 1948 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp winypux32.exe PID 536 wrote to memory of 1948 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp winypux32.exe PID 536 wrote to memory of 1948 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp winypux32.exe PID 536 wrote to memory of 1140 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp winypux32.exe PID 536 wrote to memory of 1140 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp winypux32.exe PID 536 wrote to memory of 1140 536 4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp winypux32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe"C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4072 -
C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp"C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp" /SL5="$5006A,4931557,54272,C:\Users\Admin\AppData\Local\Temp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:536 -
C:\Users\Admin\AppData\Local\Winypux\winypux32.exe"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i3⤵
- Executes dropped EXE
PID:1948
-
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C:\Users\Admin\AppData\Local\Winypux\winypux32.exe"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s3⤵
- Executes dropped EXE
PID:1140
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\is-37BEL.tmp\4af12d790d40f7c7cf55ef19da344147abab66ff16dcdb8fb24e0d577317f190.tmp
Filesize680KB
MD5c21e34336a7bd754b707115a82c1de90
SHA17ddee1b6647213e4379f34032981de74848c1c8c
SHA256eb22af283ec53600b6138441900f0e28afeaf57d5ebe3cef7948a74f657660d1
SHA5124c197f6ddb22ddac8271c63221ca443c65eb325a50c908c892c84b743041aa94a9c43c2991dfc82a2caa1e419ffea4e120dadd6386be324169fc470c8f52ba04
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
3.0MB
MD51d0923d32c61776df2c362d70a79c8f9
SHA1027602bf74fdf47b4a672fb2d4f3d37e10ee31d5
SHA256b3868502f32392cddabce456346d7f2391bb9f58a2d38f4730d71746d644c4a6
SHA512efd5804edeb39665aaeb825d1dc2701ce70419a812964806dd0e7d69b47face1a7e5906be818df0ff406f740bce9f7cc34e77e62122535d0b6eadbad17fd719b